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Finding the Fourth Proportional to 1,491.55, 2,057.23 and 960.09

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Solution

The fourth proportional to 1,491.55, 2,057.23 and 960.09 is: 1,324.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491.55 : 2,057.23 = 960.09 : x
  2. Step 2: Convert to fraction form
    1,491.55/2,057.23 = 960.09/x
  3. Step 3: Cross multiply
    1,491.55x = 2,057.23 × 960.09
  4. Step 4: Simplify right side
    1,491.55x = 1,975,119.44
  5. Step 5: Solve for x
    x = 1,975,119.44/1,491.55
  6. Step 6: Final answer
    x = 1,324.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.